Adjustable fan



March 22 1927,

c. R OSINE ADJUSTABLE FAN Patented Mar. 22;, 192.7.

.ATENTOFFIVCE.

couaan Rosina, on HICAGO, ILLINOIS.

DJ STABLE ran.

Application filed. May 22,

other motor driven vehicle, and? thefan 'blade adjustment means and fan blades are i so constructed and arranged that air may beforced against the motor, or air may be Y exhausted from underneath'the usual hood which covers the motor, orthe fan blades may be set to act as a sort of partition between the motor and outside air. Another object of this invention is to provide a simple, substantial andlrugged fan blade adjustment mechanisrmto prevent rattling and other objectionable noises and to increase the efliciency of fans ofthis character. With these ends in view this invention consists in the several novelieatures hereinafter fully set forth and claimed. 1 i The invention is clearly illustrated in the accompanying drawing, in which: Fig.1 is a front elevation of an adjustable fan, partly broken away, embodying one form of thepresent invention; Fig. 2 is a side elevation of the fan seen in Fig.

1 partly otherwise be hidden from view; Fig. v3 is a horizontal section taken on the line 3--3 of Fig. 2 and Fig.4 is a plan of aslightly modified form of the invention, partly broken away;

lteferring Figs. '1, 2 and 3, which illustrate. the. preferred embodiment of the invention, the reference character 5 designates a fragment of a bracket arm orsupport, such as is usually employed for supporting the fan assembly, on the motor block of the engine of an auto= 4 mobile'or other motorvehiclev Secured to and supported by the bracket armh is a I stationary spindle or arbor 6 upon which flthe fan pulley mounted. J The 0 tion which is shown in the form of a sleeve 9 upon which the fan pulley'is secured, as forinstance by a driving fit andbya set screw 10 if desired, and en'd'wise movement of said pulley hub or sleeve and the parts '55 carried thereby is prevented by shoulders r 11, 12 at the ends of the spindle The broken out to show parts that would to said drawing and first to;

. plun 7 and fan 8 arerotatively, fan pulley has a hub pore;

' which'areheld headed pins or studs 21 that are riveted or otherwisefastened to'the fan 1928, Serial N 'o. 110,890.

bearing construction illustrated is merely schematic, as any well known type of bearing may beemployed for the pulley and fan.

Secured to the outer end of the pulley sleeve or hub 9 are vspindles 13, .whichextend in radial directions from the sleeve and are spaced equidistantly. 4 Swiveled or ro.3 tatively mounted on each spindle 13 isa fan blade 14 which is preferably Hat and termed of sheet metal and may be of sub stantiallyrectangular form. For the sake of simplicity and convenience in manuface ture, each fan blade is formed with alternate and ntermediate halfround depressed.

portions 15 along its axis of rotation, the alternate depressed portions extending on one side of the blade and the intermediate )7 ones on the other, and forming 'a socket like arrangement for the reception of thespindle 13. On each spindle'13; issecured a collar 16 as by pinmng it thereon, which collar stands in an opening formed between' twov of the depressed parts '15 and preventsendwise movementof' the fan, blade. On {ace count'of the swivel connection between the fan blades and spindles, the fan blades may be swung or partially rotated on the spine dies to bring the fan bladesi'ntoone'and the same .plane, or to bring them into any angle,

within given limits, with respectto said plane.

Adjustment anyJ-remote place, as for instance from the dash board or instrument board of an automobile, or from any convenient place adjacent the drivers seatin the vehicle, andthe means illustrated will now be described.

Slidably mounted in the body or end wall 1? of the tan pulley 7 and along lines parallel with theaxis of the spindle 6 are plungers or stems 18, one toreach fan blade,

gers or, stems 18 are forked and the means are provided for 'adusting the angularity ofthe fan blades from ends of the links 1 9 are pivotally held be-- tween-the forks by pins 20. The outer ends of the links are formed with apertures in blades. The construction and arrangement of the connecting means between the em no i or stems 18 is merely be varied by thesubtherefor.

It will be understood that by moving the plungers or stems 18 back and forth in unison in their bearings in the fan pulley, the fan blades are thereby partly rotated or turned in unison upon their spindles, from the extreme oblique position seen in Fig. 2 to an extreme oblique position oppositely inclined with respect thereto.

The fan pulley is made hollow as shown and in the hollow thereof is a disc like member 22 to which the plunger-s or stems 18 are rigidly secured, and as a preference, by being screwed therein. Said disc like menr ber 22 forms part of a sliding collar mechanism 23 which isconnected to a forked operating rod 24 that runs to some convenient "placeadjacent the drivers seat, where it is provided with any suitable means for holding it in adjusted positions, but as this feature forms no part of the present invention it will not be described in detail. The sliding collar mechanism 23 illustrated, comprises a collar 25 rotatively mounted on the disc like member 2 by ball bearings so as to minimize the friction, the balls bein held in ball races formed in the sides of the colla-r25 andin the adjacent sides of the disc like member 22 and a ball ring 26, which is connected to the disc like member 22 by a sleeve 27, which as shown is formed as a part of the disc like member 22. The ball ring 26 is shown as th'readedly secured on the sleeve 27 for the purpose of adjustment and a lock nut 28 isthreadedly secured on the sleeve beyond the ball ring 26 to lock the same in adjusted position. Arms 29 secured to the collar 25 and to the operating rod 24 "connect the sliding collar mechanism with said operating rod.

It will be observed that although the oprod 24 holds the collar 25 stationary,

tions with the disc like member 22 and other members of-the ball bearing device for the collar-25, are free to rotate, and in practice a fan belt (not shown) is trained over the fan pulley and is driven by some motor driven fan pulley.

To change the angular position of the fan blades from the position shown in the drawing, the operating rod 2i is drawn back,

thereby drawing back the sliding collar mechanism 23, the plungers 18, links 19, and the sides of the fan blades to which the links are attached. In this manner the fan blades may be set at any desired angle, within givenlimits, with respect to the plane of rotation "of the fan. The adjustment membersmay be dravm back far enough to bring the fan blades into alignment with "each'othe'r, whereby they will act merely to out through the 'air without moving it. The adjustmentmeans may be drawn farther 'ba'ck thereby bringingthe fan blades into oblique positions disposed in directions opposite those in which they are shown in the drawing.

In modified form illustrated in the Fig. 4 the parts are substantially the same as the corresponding parts shown in Figs. 1, 2 and 3. In place of the arms 29 between the collar 25 and operating lever 24, the collar 25 itself is formed with radially extending pins or studs 29 for connection with the operating rod. In this case the forked end of the operatin rod is connected directly to the collar 25.

Among the advantages of this invention are its simplicity, its ruggedness, strength, durability and great efficiency. When used in connection with a motor of an automobile, the driver may regulate the amount of cold air supplied to the motor. For instance on cold days he may adjust the fan blades so as to stand in a plane parallel of the plane of rotation of the fan or he may adjust the fan blades so as to direct the current of air in an outward direction from the hood. If he finds that the motor is heating more than necessary he may adjust the fan blades so as to deflectthe fan blades into a position where they act to move air to and under the hood. Furthermore the driver may set the fan blades so as to increase or decrease the amount of air moved by the fan in either direction.

More or less variation of the exact details of construction is possible without departing from the spirit of this invention; I desire, therefore, not to limit myself to the exact form of the construction shown and described, but intend, in the following claims, to point out all of the invention disclosed herein.

I claim as new, and desire to secure by Letters Patent:

1. In an adjustable fan, the combination of a rotatively mounted hollow fan pulley having a hub extension of'smaller diameter than the pulley, fan blades swiveledon one end of said hub extension, sliding collar mechanism slidably mounted in the hollow of said fan pulley, an operating rod connected to said sliding collar mechanism, fan bladeadjusting Dlungers, one for each fan blade, slidably mounted in the fan pulley body and located externally of the hub extension thereof, said plungers being rigidly secured to a member of said sliding collar mechanism, and connecting links, one for each fan blade, and directly connected thereto, and pivotally connecting a plunger with an associated fan blade externally of said hub extension.

2. In an adjustable fan, thecombination of a rotatively mounted hollow fan pulley having a sleeve like hub portion ofsmaller diameter than the pulley and "extending be yond one end of the fan pulley, radiallyextending spindles rigidly secured to the outer ing plungers,

end of the extended part of said hubportion of the pulley, fan blades, one swiveled on each spindle, sliding collar mechanism slidably mountedto move into the hollow of the fan pulley, an operating rod connected to said sliding collar mechanism, fan adjustone for each fan, sli'dably mounted in the fan pulley body, and located externally of said hub portion, said plungers being rigidly secured to a member of the sliding collar mechanism, and connecting links, one for each fan blade, and directly connected thereto, and pivotally connecting a plunger with its associatedffan blade externally of said hub portion.

3. In an adjustable fan, the combination of a rotatively mounted hollow fan pulley having a hub extension of smaller diameter in the fan pulley body and located externally of said hub I extension,

said plunger-s being rigidly secured to said plunger actuating member of the sliding collar mechanism, and connecting links, one for each fan blade and directly connected thereto, and pivotally connecting a plunger with its associated fan blade externally of said hub extension.

4. In an ad ustable fan, the combination of-a rotatively mounted'hollow fan pulley having a sleeve like hub portion of smaller diameter than the pulley, radially extending spindles rigidly'secured'to one end of said hub portion, fan blades swiveled on said spindles, slidable collar mechanism slidably mounted on said. sleeve like hub portion within thehollow of the fan pulley, an operating rod connected to said sliding collar mechanism, i'an adjusting plungers, located i externally of said hub portion, there being one for each fan blade, rigidly secured to a member oi sald sliding collar mechanlsm, and connecting links, one for each fan blade,

and directly connected thereto, and pivotally connecting a plunger with its associated fan blade externally of said hub portion.

' CONRAD Rosina; 

